Ok Computer gurus, help me out. I had been running a "grey market" Windows XP, and then when I installed Service Pack 2, it said I had to register it, so I dumped it and now I have a real XP Home and it's registered, and what not. The problem is that when I am scrolling through the screen it always seems to be behind it self then it catchs up. Also when I watch movies, it is choppy at best. I have DVD Idle Pro, and PowerDVD, but the DMA enable won't stay on on Idle Pro. It says it has to restart, then it does, and then it's disabled again. The DMA is set in my Device Manager. Anyone know what the hell is going on? Or am I missing something somewhere else. Or is more info needed.